I would consider any investment that promises 3.5 - 7% return per day day to be exactly what it looks like - too good to be true.

Edit: And as @Remon22877929 and @Indira2210 have the same IP address, consider the endorsement from @Remon22877929 to be astroturfing. It's a good thing I'm in a good mood today, otherwise I might have deleted all accounts linked to that IP ..... Yes, I see you as well @Yuri83770210